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Filing office location. In addition, when unthreaded hole wheels are specified, the inside flat, K dimension, must be large enough to accommodate a suitable flange. 1910.144 Safety color code for marking physical hazards. (11) Hydraulic equipment. (4) Pressure pipes. above floor level. d. Statement that the safety system conforms with all requirements of the PSDI standard and appendix A. However, where an operator must do many operations outside the press, such as lubricating, trimming, deburring, etc., a longer interval up to 30 seconds is permitted. (4) Hangers. (v) An indicator visible to the operator and readily seen by the employer shall be provided which shall clearly indicate that the system is set-up for cycling in the PSDI mode. (5) Universal joints on spindles of boring machines shall be completely enclosed in such a way as to prevent accidental contact by the operator. The areas covered by this set of standards include: 1910.26 Dockboards. For installation certification/validation and annual recertification/revalidation, in the first stage the employer certifies or recertifies that the employer is installing or utilizing a PSDI safety system validated as meeting the design requirements of 29 CFR 1910.217 (a) through (h) and this appendix A by an OSHA-recognized third-party validation organization and that the installation, operation and maintenance meet the requirements of 29 CFR 1910.217 (a) through (h) and this appendix A. The certification/validation of safety systems for PSDI shall consider the press, controls, safeguards, operator, and environment as an integrated system which shall comply with all of the requirements in 29 CFR 1910.217 (a) through (h) and this appendix A. In addition, the brake monitor shall be adjusted during installation certification to prevent successive stroking of the press if increases in stopping time cause an increase in the safety distance above that required by paragraph (h)(9)(v) of this section. 1910.335 Safeguards for personnel protection. (h) Keys, setscrews, and other projections. (1) All portions of the saw blade shall be enclosed or guarded, except for the working portion of the blade between the bottom of the guide rolls and the table. 1910.121 [Reserved]. Where panels are fitted with expanded metal or wire mesh the middle rails may be omitted. PART 1910OCCUPATIONAL SAFETY AND HEALTH STANDARDS. (2) Brakes. Type 28 wheels have saucer shaped grinding rims. Learn more about the eCFR, its status, and the editorial process. (i) Air valve and air pressure supply/control. 1910.3 Petitions for the issuance, amendment, or repeal of a standard. Means must be provided to prevent tightener from falling, in case the belt breaks. Have unit wired by qualified electrician. A slide is also called a ram, plunger, or platen. (ii) Table O-5, and Table O-7 and Figures O-31, O-33, O-34 show minimum dimensions for straight adaptor flanges for use with wheels having holes larger than the spindle. Ample room for cleaning machines, handling material, work pieces, and scrap shall also be provided. Shafting under bench machines shall be enclosed by a stationary casing, or by a trough at sides and top or sides and bottom, as location requires. b. Table O-2 - Exposure Versus Wheel Thickness, Table O-4 - Minimum Dimensions for Straight Unrelieved Flanges for Wheels with Threaded Inserts or Projecting Studs. Subpart O: Machinery and Machine Guarding, OSHA 1910 General Industry | UpCodes Subpart O Machinery and Machine Guarding Authority: 29 U.S.C. (4) The Assistant Secretary shall review the record, the decision by the administrative law judge, and the exceptions. (ix) Diamond wheels, except certain vitrified diamond wheels. 5. (ii) All major assemblies and fittings which can loosen and fall shall be properly secured in place. Expanded metal, perforated or solid sheet metal, wire mesh on a frame of angle iron, or iron pipe securely fastened to floor or to frame of machine. 1 The recommendations listed in the above table are guides for the conditions stated. 20), and the openings shall be not greater than three-eighths inch. Sprockets and chains. Final decision by Assistant Secretary - a. (8) Concurrent means acting in conjunction, and is used to describe a situation wherein two or more controls exist in an operated condition at the same time. (g) Enclosing the point of operation before a press stroke can be initiated, so as to prevent an operator from reaching into the point of operation prior to die closure or prior to cessation of slide motion during the downward stroke. (5) Each wood jointer with vertical head shall have either an exhaust hood or other guard so arranged as to enclose completely the revolving head, except for a slot of such width as may be necessary and convenient for the application of the material to be jointed. (13) Revolving double arbor saws shall be fully guarded in accordance with all the requirements for circular crosscut saws or with all the requirements for circular ripsaws, according to the kind of saws mounted on the arbors. fOSHA Conveyor Standards 1. (b) Where passage is regarded as necessary, there shall be a platform over the lower run guarded on either side by a railing completely filled in with wire mesh or other filler, or by a solid barrier. (iv) An interlocked press barrier guard shall be attached to the press frame or bolster and shall be interlocked with the press clutch control so that the clutch cannot be activated unless the guard itself, or the hinged or movable sections of the guard are in position to conform to the requirements of Table O-10. The most recent records shall be made available to OSHA upon request. Some metals can be forged at room temperature, but the majority of metals are made more plastic for forging by heating. (ii) At least annually thereafter, the safety system on a mechanical power press used in the PSDI mode shall be recertified by the employer and revalidated by an OSHA-recognized third-party validation organization to meet all applicable requirements of paragraphs (a) through (h) and appendix A of this section. This section covers the principal features with which power transmission safeguards shall comply. (i) Each continuous line of shafting shall be secured in position against excessive endwise movement. (2) All knives and cutting heads of woodworking machines shall be kept sharp, properly adjusted, and firmly secured. (See Figures O-16 and O-17. c. Function completion means for, electrical, electromechanical and electronic devices, when the circuit produces a change of state in the output element of the device. Paragraph (h)(6)(xv) of the standard requires that the control system have provisions for an inch operating means; that die-setting not be done in the PSDI mode; and that production not be done in the inch mode. b. Inclined and vertical shafts, particularly inclined idler shafts, shall be securely held in position against endwise thrust. The objective of the certification/validation program is to demonstrate and document that the system satisfies specification and operational requirements for safe operations. a. (3) Training of maintenance personnel. tensile strength 60,000 p.s.i.). It is recommended that old installations be changed to conform to this rule. (iv) single strand V-belts, the width of which is thirteen thirty-seconds (1332) inch or less. The intent of paragraph (h)(9)(iii) is to prohibit use of mirrors to bend a single light curtain sensing field around corners to cover more than one side of a press. For that reason, the prohibitions against die-setting in the PSDI mode, and against production in the inch mode are cited to emphasize that inch operation is of reduced safety and is not compatible with PSDI or other production modes. There are other general safety precautions which should be followed by everyone even if they dont work directly with conveyors. (ii) All guards for inclined belts shall be arranged in such a manner that a minimum clearance of seven (7) feet is maintained between belt and floor at any point outside of guard. (3) Type 6 straight cup wheels means wheels having diameter, thickness, hole size, rim thickness, and back thickness dimensions. The employer shall insure by adequate supervision that correct operating procedures are being followed. The validation organization shall notify the appropriate product manufacturer(s) of any reports from employers of point of operation injuries which occur while a press is operated in a PSDI mode. (3) Auxiliary equipment. Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible. Conveyors are safe when used correctly, but they can be dangerous, and even deadly, if workers fail to follow safety procedures when working on or around them. If used, these devices shall be located so as to detect all operator locations and positions not detected by the PSDI sensing field, and shall prevent stroking or stop a stroke in process when any supplemental sensing field(s) are interrupted. (1) Hazards to personnel associated with broken or falling machine components. (6) Where two or more workers are employed at the same time on the same power-driven guillotine veneer cutter equipped with two-hand control, the device shall be so arranged that each worker shall be required to use both hands simultaneously on the controls to start the cutting motion, and at least one hand on a control to complete the cut. The validation organization shall assign overall responsibility for the validation of PSDI certification to an Administrative Director. a. Test results obtained from development testing may be used to certify/validate the design. (2) It is recommended, however, that no projecting setscrews or oilcups be used in any revolving pulley or part of machinery. (b) 12-inch diameter wheel, 1,000 revolutions per minute. However, the National Institute for Occupational Safety and Health developed a mathematical model that helps predict the risk of injury based on the weight being lifted and accounts for many additional factors. [Reserved], https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-O. If the deficiencies are not corrected, OSHA may revoke recognition, effective in 60 days, unless the validation organization requests a hearing within that time. (8) Die handling. The manufacturer shall evaluate and certify, and the OSHA-recognized third-party validation organization shall validate, the design and operation of the safety system by determining conformance with the following: a. The safety guard shall be mounted so as to maintain proper alignment with the wheel, and the strength of the fastenings shall exceed the strength of the guard, except: (i) Safety guards on all operations where the work provides a suitable measure of protection to the operator, may be so constructed that the spindle end, nut, and outer flange are exposed; and where the nature of the work is such as to entirely cover the side of the wheel, the side covers of the guard may be omitted; and. 1910.424 SCUBA diving. (12) Upsetters (or forging machines, or headers) type of forging equipment, related to the mechanical press, in which the main forming energy is applied horizontally to the workpiece which is gripped and held by prior action of the dies. Available from the CSST Document Center (English website under construction) (RJ-510071). This responsibility includes: (i) Establishing periodic and regular maintenance safety checks and keeping certification records of these inspections which include the date of inspection, the signature of the person who performed the inspection and the serial number, or other identifier, for the forging machine which was inspected. Acceptable design features shall demonstrate, in the following order or precedence, that: (1) No single failure points may cause injury; or. (i) Pulleys shall be kept in proper alignment to prevent belts from running off. (2) Arbors and mandrels shall be constructed so as to have firm and secure bearing and be free from play. 1910.104 Oxygen. The test shall be considered successful if the stopping time remains within that which is determined by paragraph (h)(9)(v) for the safety distance setting. Materials should be placed on the conveyor so that they will ride safely. c. The recognized validation organization shall continue to satisfy all the requirements of this appendix and the letter of recognition during the period of recognition. (2) Instruction to operators. Paragraph (f)(1) of this section does not apply to hand-operated gears used only to adjust machine parts and which do not continue to move after hand power is removed. The validation organization shall demonstrate that: a. (14) Operators shall not ride the carriage of a veneer slicer. (65) Validation or validate means for PSDI safety systems that an OSHA recognized third-party validation organization: (i) For design certification/validation has reviewed the manufacturer's certification that the PSDI safety system meets the requirements of 1910.217 (a) through (h) and appendix A and the underlying tests and analyses performed by the manufacturer, has performed additional tests and analyses which may be required by 1910.217 (a) through (h) and appendix A, and concludes that the requirements of 1910.217 (a) through (h) and appendix A have been met; and. All points not readily accessible shall have oil feed tubes if lubricant is to be added while machinery is in motion. The employer shall provide clearance between machines so that movement of one operator will not interfere with the work of another. The guard shall be constructed of heavy material, preferably metal, and the bottom of the guard shall come down to within three-eighths inch of the plane formed by the bottom or working surfaces of the feed rolls. (7) Direct drive means the type of driving arrangement wherein no clutch is used; coupling and decoupling of the driving torque is accomplished by energization and deenergization of a motor. 553. (7) Environmental requirements. Inch is a function used by the die setter for setup of dies and tooling, but is not intended for use during production operations by the operator. (i) Die setting on presses used in the PSDI mode shall be performed in accordance with paragraphs (d) and (h) of this section. Bearings shall be kept in alignment and properly adjusted. (3) Mill means a machine consisting of two adjacent metal rolls, set horizontally, which revolve in opposite directions (i.e., toward each other as viewed from above) used for the mechanical working of rubber and plastics compounds. If made of metal shapes or bars, their section shall be equal in strength to that of one and one-half (112) by one and one-half (112) by three-sixteenths (316) inch angle iron. Where the operator feeds or removes parts by placing one or both hands in the point of operation, and a two hand control, presence sensing device, Type B gate or movable barrier (on a part revolution clutch) is used for safeguarding: (i) The employer shall use a control system and a brake monitor which comply with paragraphs (b) (13) and (14) of this section; (ii) The exception in paragraph (b)(7)(v)(d) of this section for two hand controls manufactured and installed before August 31, 1971 is not applicable under this paragraph (c)(5); (iii) The control of air clutch machines shall be designed to prevent a significant increase in the normal stopping time due to a failure within the operating valve mechanism, and to inhibit further operation if such failure does occur, where a part revolution clutch is employed. 1910.181 Derricks. (2) Brake means the mechanism used on a mechanical power press to stop and/or hold the crankshaft, either directly or through a gear train, when the clutch is disengaged. (39) Inch means an intermittent motion imparted to the slide (on machines using part revolution clutches) by momentary operation of the Inch operating means. (4) Work rests. The use of belt poles as substitutes for mechanical shifters is not recommended. It would not be necessary to repeat the tests on individual safety systems of the same manufacture or design. (3) Shoe last and spoke lathes, doweling machines, wood heel turning machines, and other automatic wood-turning lathes of the rotating knife type shall be equipped with hoods enclosing the cutter blades completely except at the contact points while the stock is being cut. (iii) Portable units shall be used only in areas where good, general room ventilation is provided. (9) Repairs and maintenance. [Reserved] (v) Tongs shall be of sufficient length to clear the body of the worker in case of kickback, and shall not have sharp handle ends. f. The instrument used to measure reaction time shall be calibrated to be accurate to within 0.001 second. Higher pressures may be permitted, however, to increase clutch torque to free jammed dies, provided positive measures are provided to prevent the higher pressure at other times. The OSHA-recognized third-party validation organization shall conduct tests, and/or review and evaluate the employer's installation, tests, documentation and representations. Hand feeding tools are intended for placing and removing materials in and from the press. It shall be ascertained that the springs have not been broken and that they are functioning properly. Tests which are conducted by the manufacturers of electrical components to establish stress, life, temperature and loading limits must be tests which are in compliance with the provisions of the National Electrical Code. The OSHA catwalk width requirements are found in section 1910.28 (b) (5) (ii) (A).